REFERENCES
- Alio, I. S. (1967). Epidemiology of schistosomiasis in Saudi Arabia with an emphasis on geographic distribution patterns. Ph.D. thesis, Colombia University, New York.
- Cheever, A. W. (1968). Bulletin of the World Health Organization, 39, 328–331.
- Fenwick, A. (1969). Transactions of the Royal Society of Tropical Medicine and Hygiene, 63, 557–567.
- Ghandour, A. M., Al-Robsi, A. & El-Gohary, M. (1986). Arab Gulf Journal of Scientific Research, 4, 203–219.
- Ghandour, A. M., Zahid, N., Banaja, A. A., Kamal, K. & Boug, A. (1995). Journal of Tropical Medicine and Hygiene, 98, 431–439.
- Katz, N., Chaves, A. & Pellegrino, J. (1972). Revista do Inslituto de Medicina Tropical de São Paulo, 14, 397–100.
- Marshall, I., Morrison, J. A. & Nyirenda, W. (1989). Annals of Tropical Medicine and Parasitology, 83, 31–35.
- McGrew, W. C., Tuten, C. E. G., Collins, D. A. & File, S. K. (1989). Journal of Parasitology, 17, 147–155.
- Muchemi, G. K. M. (1992). Baboons as maintenance hosts of human schistosomiasis in Kenya. Ph.D. thesis, University of Liverpool, U.K.
- Nelson, G. S., Teesdale, C. & Highton, R. B. (1962). In Bilharziasis, Ciba Foundation Symposium, eds Wolstenhome, G. E. W. & O'Connor, M. pp. 127–149. London: J. & A. Churchill.
- Rollinson, D., Imbert-Establet, D. & Ross, G. C. (1986). Parasitology, 93, 39–53.
- Smithers, S. R. & Terry, R. J. (1965). Parasitology, 55, 695–700.
- Soisson, L. A., Reid, G. D., Farah, I. O., Nyindo, M. & Strand, M. (1993). Journal of Immunology, 151, 4782–1789.
- Thkron, A. (1984). Journal of Parasitology, 70, 652–855.
- Webbe, G. & James, C. (1971). Symposia of the British Society for Parasitology, 9, 77–108.
- Zahid, N. Z., Ghandour, A. M. & Banaja, A. A. (1999). Tropical Medicine and International Health, in press.